The Flow of Fresh Water: Chapter 11 The Flow of Fresh Water: 1) Turn in your quiz remediation to rainbow table unless you are green period! 2) Please take out the river erosion sheet and the half sheet to glue in your IAN!

Rivers brainpop Describe how moving water shapes the surface of the Earth. Parts of a River (textbook e activity)

Chap 11, Sec 1&2 (The Active River) Objectives: Describe how moving water shapes the surface of the Earth. Explain 3 factors that affect the rate of stream erosion. Describe how a stream or river erodes and deposits sediment at the same time.

3 Factors Influencing Stream Erosion: 1.Gradient- the steepness or elevation of slope 2. Load- (3 types) Bed, Suspended, and Dissolved 3. Discharge – the amount of water that a stream or river carries in a given amount of time ***A stream’s ability to erode is influenced by these three factors!***

Gradient examples Types of Load Discharge

Erosion & Deposition Simultaneously Rivers and streams deposit sediment where the speed of the water current decreases. Erosion & Deposition Simultaneously

Red Dye Meandering river Why do rivers curve? (3min) Red Dye Meandering river (1.5 min) hotlink

Draw a picture of a river and make note of where the river is eroding and depositing simultaneously.

Deposition Tech Terms: 4. delta – a fan shaped depositional feature, formed when a load filled stream/river slows, as it enters a larger body of water. As sediment is dropped at the mouth of the Nile River, in Egypt, a delta forms.

5. alluvial fan – a fan shaped depositional feature, formed when a fast moving mountain stream flows onto a flat plain (land).

On Land

6. flood plain – the area along a river that contains rich, fertile soil due to periodic overflow from a stream/river.

Let’s test our understanding!